Copy letter from Ian MacAlister, Secretary of the Royal Institute of British Architects, 9 Conduit Street, Regent Street, W.1., to the Secretary of the Royal Society, Burlington House, W.1. Informs the Royal Society that the the Royal Institute of British Architects (RIBA) is planning a programme to commemorate the Bicentenary of Christopher Wren's death on 25 February 1923. Informs them that an important part of the programme will be an exhibition of Wren's work in the galleries of the Royal Institute. Asks if the Royal Society could loan any 'Wren relics' to the Royal Institute, which would be greatly appreciated. Handwritten note at the bottom: 'Have we any Wren Relics?' Signed F.A.T. [Francis Alexander Towle]. 30 June 1922